if an= 6n+2. find its common difference
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an=6n+2
put n=1
6(1)+2= 6+2
=a1=8
put n=2
6(2)+2=12+2
=a2=14
d=a2-a1 =14-8
=6
here, common diff is 6.
put n=1
6(1)+2= 6+2
=a1=8
put n=2
6(2)+2=12+2
=a2=14
d=a2-a1 =14-8
=6
here, common diff is 6.
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